Re: Spectrocam: standard versus UV?
Re: Spectrocam: standard versus UV?
- Subject: Re: Spectrocam: standard versus UV?
- From: Paul Schilliger <email@hidden>
- Date: Mon, 03 Sep 2001 13:50:36 +0200
David,
Thank you again for your help and comments on the Spectrostar UV.
To put it into "beginner's english" ;-) , will I in practice miss anything from
the non UV version if I buy that one? Or will it work just the same?
(profiling mainly Epson dye and pigment printers and Laser output on
photographic paper)
Best Regards,
Paul Schilliger
email@hidden wrote:
>
To put this into American English, the SpectroCam UV does not filter out UV
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from the returning light, it removes it from the light source that is used in
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the sampling. This is similar to the ColorMouse technique, where the source,
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not the sample, is UV controlled. This will have no effect on using the
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SpectroCam for emissive readings, in those locations where the SpectroCam is
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still sold with emissive reading capabilities.
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The note about UV fluorescence versus visible spectrum flourescence is very
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true as well: all you can expect from UV control is information about paper
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whiteners. Fluorescent inks are more likely to steal their extra light from
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visible sources than UV, and without checking how much light went out at each
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band in the spectrum, as well as how much came back, ( a slow and expensive
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process) this is difficult to measure or deal with.
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So while I am curious to see how well the new SpectroCam UV will deal with
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Epson pigmented inks, I don't expect miracles... if I can manage to get any
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results on this before Print '01, I'll let you know.
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>
C. David Tobie
>
Design Cooperative
>
email@hidden